why is my GMC Sierra T1XX (2019-Present) rearview camera not working?

GMC Sierra T1XX (2019-Present)

Error Codes

1-2 hours

Time

medium

Difficulty

medium

Severity

3 min read

526 words

Problem Statement

Learn how to diagnose and fix rearview camera issues in GMC Sierra T1XX (2019-Present). Step-by-step guide with symptoms, diagnostic steps, and solutions.

Affected Component

Electrical

Estimated Time

1-2 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Disconnect the vehicle battery before working on electrical systems to prevent accidental short circuits.

Symptoms

•Rearview camera screen remains blank or displays 'Camera Unavailable' message
•No image or distorted image when vehicle is in reverse
•Backup assistance features (if equipped) are not functioning
•Check for related warnings on the dashboard
•Intermittent operation of the rearview camera

Diagnostic Steps

1
Inspect the camera lens for dirt, damage, or obstructions.
2
Check the vehicle's reverse light bulbs to ensure they are functioning properly.
3
Use an OBD-II scanner to check for any diagnostic trouble codes (DTCs) related to the camera or rearview system.
4
Verify the camera connections by inspecting the wiring harness for loose or corroded connectors.
5
Test the display settings to ensure that the rearview camera is enabled in the vehicle's settings menu.
6
Check the fuses related to the rearview camera system for any blown fuses.

Solution

💡 Expert Tip

For complex repairs like this, consider taking photos at each step. This helps if you need to reverse a step or consult with a mechanic. Also, keep all removed parts organized - you may need to reference them during reassembly.

Verification

After completing the repair, verify that the issue has been resolved:

✓Test the affected component to ensure it functions correctly
✓Check for any error codes or warning lights
✓Monitor the vehicle for a few days to ensure the issue does not recur

Prevention Tips

To prevent this issue from occurring again:

•Follow the manufacturer's recommended maintenance schedule
•Address warning signs early before they develop into major issues
•Use quality parts and fluids recommended for your vehicle
•Keep detailed records of all repairs and maintenance

Tools & Equipment Required

•OBD-II scanner
•Multimeter
•Basic hand tools (screwdrivers, pliers)

Parts Required

•Replacement fuse (if necessary)
•Potential rearview camera module (if defective)

Related Faults

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Diagnostic Steps

1
Inspect the camera lens for dirt, damage, or obstructions.
2
Check the vehicle's reverse light bulbs to ensure they are functioning properly.
3
Use an OBD-II scanner to check for any diagnostic trouble codes (DTCs) related to the camera or rearview system.
4
Verify the camera connections by inspecting the wiring harness for loose or corroded connectors.
5
Test the display settings to ensure that the rearview camera is enabled in the vehicle's settings menu.
6
Check the fuses related to the rearview camera system for any blown fuses.

Solution

1. Preparation

Tools Required: OBD-II scanner, multimeter, basic hand tools (screwdrivers, pliers).
Ensure the vehicle is parked on a flat surface with the ignition turned off before starting the repair.

2. Clean the Camera Lens

Inspect the rearview camera lens for dirt or debris.
Use a soft cloth and glass cleaner to clean the lens carefully.

3. Inspect Wiring and Connectors

Remove the rearview camera housing (if accessible).
Check the wiring harness for any signs of wear or damage.
- Sub-steps:
  - Disconnect the wiring harness to inspect the pins for corrosion.
  - Use a multimeter to test for continuity in the wire.
  - Reconnect the harness securely once inspected.

4. Check and Replace Fuses

Locate the fuse box (consult owner’s manual for location).
Identify the fuse related to the rearview camera system.
Use a multimeter to check for continuity or visually inspect the fuse.
- Sub-steps:
  - If the fuse is blown, replace it with a new fuse of the same amperage.
  - Recheck the camera functionality after replacing the fuse.

5. Reprogram or Reset the Camera System

If other steps do not resolve the issue, perform a reset of the vehicle's infotainment system.
- Sub-steps:
  - Disconnect the vehicle battery for about 10 minutes to reset the system.
  - Reconnect the battery and check if the camera functions properly.